linux-kernel - Re: [PATCH v2 1/3] sysfs: Use only return value from is

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Message-ID: <20150312100018.GB3682@kroah.com>
Date:	Thu, 12 Mar 2015 11:00:18 +0100
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Cc:	Guenter Roeck <linux@...ck-us.net>, linux-kernel@...r.kernel.org,
	kernel@...oirfairelinux.com
Subject: Re: [PATCH v2 1/3] sysfs: Use only return value from is_visible for
 the file mode

On Wed, Mar 11, 2015 at 02:22:09PM -0400, Vivien Didelot wrote:
> From: Guenter Roeck <linux@...ck-us.net>
> 
> Up to now, is_visible can only be used to either remove visibility
> of a file entirely or to add permissions, but not to reduce permissions.
> This makes it impossible, for example, to use DEVICE_ATTR_RW to define
> file attributes and reduce permissions to read-only.
> 
> This behavior is undesirable and unnecessarily complicates code which
> needs to reduce permissions; instead of just returning the desired
> permissions, it has to ensure that the permissions in the attribute
> variable declaration only reflect the minimal permissions ever needed.
> 
> Change semantics of is_visible to only use the permissions returned
> from it instead of oring the returned value with the hard-coded
> permissions.
> 
> Cc: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> ---
>  fs/sysfs/group.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)

Why have you not signed off on this patch if you sent it to me?  Don't
you agree with it?

thanks,

greg k-h
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